Construct a ABC whose perimeter is 12 cm, B = 60o and C = 45o. Justify the construction.
Steps of construction:
i) Draw a ray and on it mark PX=12cm.
ii) At P construct
iii) At X construct
iv) Let the rays PY and XZ intersect at A.
v) Let the perpendicular bisectors of AP and AX intersect PX at B and C respectively.
vi) Join AB and AC.
ABC is the required triangle.
Justify : After measurement by ruler
AB + BC + AC = 12 cm
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